Effect of spatiotemporal variation of food environment on recruitment, growth and survival of zooplankton

2008 Fiscal Year Final Research Report

• Project/Area Number: 18688011
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: General fisheries
• Research Institution: Fisheries Research Agency
• Principal Investigator: TAKAHASHI Kazutaka Fisheries Research Agency, 東北区水産研究所混合域海洋環境部, 主任研究員 (00301581)
• Project Period (FY): 2006 – 2008
• Keywords: 海洋生態 / 環境変動 / 水産学 / 地球科学 / プランクトン / 生物生産

Research Abstract

親潮域の動物プランクトンの多くは春季珪藻ブルームに依存して再生産・成長するが、餌環境変動が動物プランクトン個体群に与える影響の詳細は不明である。本研究はカイアシ類Eucalanus bungiiの休眠覚醒・産卵・卵孵化に体内蓄積脂質の代謝と摂餌による珪藻由来の必須脂肪酸摂取が重要な要因であることを示し、珪藻ブルームのタイミングと規模が本種の再生産の鍵を握っていることを示した。

Research Products

• [Journal Article] Grazing impact of the copepod community in the Oyashio region western subarctic Pacific Ocean (2008)
  • Author(s): Takahashi, K., A. Kuwata, H. Saito, & K. Ide
  • Journal Title: Progress in Oceanography 78 Pages: 222-242
  • Peer Reviewed
• [Journal Article] A rapid analysis of copepod grazing using the FlowCAM (2008)
  • Author(s): Ide, K., K. Takahashi, A. Kuwata, M. Nakamachi, & H. Saito
  • Journal Title: Journal of Plankton Research 30 Pages: 275-281
  • Peer Reviewed
• [Journal Article] Seasonal appearance of expatriated boreal copepods in the Oyashio-Kuroshio mixed region (2008)
  • Author(s): Kobari, T., Moku, M., & Takahashi, K.
  • Journal Title: ICES Journal of Marine Science 65 Pages: 469-476
  • Peer Reviewed
• [Journal Article] Direct observation of swimming behaviour in a shallow water scavenging amphipod Scopelocheirus onagawae in relation to chemoreceptive foraging (2007)
  • Author(s): Ide, K., K. Takahashi, & M. Omori
  • Journal Title: Journal of Experimental Marine Biology and Ecology 340 Pages: 70-79
  • Peer Reviewed
• [Journal Article] Chemoreceptive foraging in a shallow-water scavenging lysianassid amphipod : Role of amino acids in the location of carrion in Scopelocheirus onagawae (2006)
  • Author(s): Ide, K., K. Takahashi, T. Nakano, M. Sato, & M. Omori
  • Journal Title: Marine Ecology Progress Series 317 Pages: 193-202
  • Peer Reviewed
• [Journal Article] Downward carbon transport by diel vertical migration of Metridia pacifica and M. ohotensis in the Oyashio region of the western subarctic Pacific Ocean
  • Author(s): Takahashi, K., A. Kuwata, H. Sugisaki, K. Uchikawa & H. Saito
  • Journal Title: Deep-Sea Research I (in press)
  • Peer Reviewed
• [Journal Article] Transport of subarctic large copepods from the Oyashio area to the mixed water region by the coastal Oyashio intrusion
  • Author(s): Shimizu, Y., K. Takahashi, S. Ito, S. Kakehi, H. Tatebe, I. Yasuda, A. Kusaka, & T. Nakayama
  • Journal Title: Fisheries Oceanography (in press)
  • Peer Reviewed
• [Journal Article] Reproduction grazing and development of the large subarctic calanoid Eucalanus bungii : Is spring diatom bloom the key to control their recruitment?
  • Author(s): Takahashi, K, & K. Ide
  • Journal Title: Hydrobiologia (in press)
  • Peer Reviewed
• [Presentation] Importance of spring diatom blomm in reproductive activity if large subarctic calanoid copepod Eucalanus bungii in the Oyashio region northwestern Pacific (2008)
  • Author(s): Takahashi, K., Ide, Kuwata, A., Nakamachi, Saito,. H.
  • Organizer: The 10th International Conference on Copepoda
  • Place of Presentation: Pattaya Thailand
  • Year and Date: 20080600
• [Presentation] カイアシ類Eucalanus bungiiの産卵生態 I. 休眠覚醒と産卵開始 (2008)
  • Author(s): 高橋一生・井出恵一郎・中町美和・桑田 晃・齊藤宏明
  • Organizer: 日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 20080300
• [Presentation] カイアシ類Eucalanus bungiiの産卵生態 II. 孵化における脂質クラスと脂肪酸の役割 (2008)
  • Author(s): 井出恵一郎・高橋一生・吉村和也・濱健夫・中町美和・桑田晃・齊藤宏明
  • Organizer: 日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 20080300